# Difference between revisions of "Dictionary:Back substitution"

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{{lowercase}}{{#category_index:B|back substitution}} | {{lowercase}}{{#category_index:B|back substitution}} | ||

− | When simultaneous equations can be expressed as < | + | When simultaneous equations can be expressed as <math> A\cdot X=B </math>, where <math> A </math> is a triangular matrix and <math> X </math> and <math> B </math> are vectors, the solution for the last (or first) value becomes trivial. Back-substitution then involves successively replacing the last (or first) value in the equations for the other elements so that their solutions also become trivial. |

[[Category:Pages with unformatted equations]] | [[Category:Pages with unformatted equations]] |

## Revision as of 15:31, 28 October 2015

When simultaneous equations can be expressed as , where is a triangular matrix and and are vectors, the solution for the last (or first) value becomes trivial. Back-substitution then involves successively replacing the last (or first) value in the equations for the other elements so that their solutions also become trivial.